CN116329495A - Dip coating system - Google Patents

Dip coating system Download PDF

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Publication number
CN116329495A
CN116329495A CN202310324483.XA CN202310324483A CN116329495A CN 116329495 A CN116329495 A CN 116329495A CN 202310324483 A CN202310324483 A CN 202310324483A CN 116329495 A CN116329495 A CN 116329495A
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CN
China
Prior art keywords
dip
coating
liquid
cavity
dip coating
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Pending
Application number
CN202310324483.XA
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Chinese (zh)
Inventor
太红伟
安润仓
马玺
孙百超
王腾
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Shared Intelligent Equipment Anhui Co ltd
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Shared Intelligent Equipment Anhui Co ltd
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Application filed by Shared Intelligent Equipment Anhui Co ltd filed Critical Shared Intelligent Equipment Anhui Co ltd
Priority to CN202310324483.XA priority Critical patent/CN116329495A/en
Publication of CN116329495A publication Critical patent/CN116329495A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C23/00Tools; Devices not mentioned before for moulding
    • B22C23/02Devices for coating moulds or cores
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Abstract

A dip-coating system belongs to the technical field of casting and is used for solving the problems of sand siltation at the bottom of a dip-coating tank and uneven baume degree of an applied liquid material in the dip-coating tank, and comprises the dip-coating tank and a circulating mechanism, wherein the circulating mechanism is connected with the dip-coating tank and is used for enabling the coating in the dip-coating tank to be in a flowing state; the dip-coating tank is used for containing the application liquid, and the product to be dip-coated is placed into the application liquid in the dip-coating tank for application. The circulation and filtering of the application liquid in the dip-coating cavity are realized, the effective working time of the dip-coating cavity is prolonged, and the operation efficiency is improved.

Description

Dip coating system
Technical Field
The invention relates to the technical field of casting, in particular to an application device for casting a sand core.
Background
The foundry sand core needs to be surface treated with a coating material before casting. The coating has the effects of reducing sand sticking of the casting and obtaining the casting with good surface quality; secondly, the rigidity of the sand core can be effectively improved, and the sand core is prevented from being damaged or deformed in the carrying process. The coating used in the application process is generally of high baume and water is used as a diluent. At present, almost all intelligent dip-coating processes use tools such as a bearing tool or an intelligent mechanical arm to dip the sand core into a coating pool; the dip-coating process has the defects that firstly, the dip-coating pool is large in opening and evaporation capacity, and a diluent is required to be added at any time and the circulation of a dip-coating cavity is required to be kept so as to maintain the stable Baume degree of the coating; secondly, the floating sand which is not cleaned up on the surface of the sand core in the dip-coating process can fall into the bottom of the dip-coating pool, so that the dip-coating quality is affected, the floating sand can be precipitated at the bottom of the dip-coating pool, the normal use of a dip-coating pool system is affected by blocking and solidifying in a circulating pipeline, the dip-coating pool is cleaned manually, the paint is not only required to be emptied out of the dip-coating pool and transferred out, but also an operator is required to enter a dip-coating cavity for cleaning, and the dip-coating pool is very troublesome.
Disclosure of Invention
In view of the problems of high paint consumption in the dip-coating tank and blockage of a paint circulation loop caused by sand scattering on the surface of the sand core, a dip-coating system is necessary to be provided, and the problems of easy precipitation of paint in the dip-coating tank, difficult cleaning of the dip-coating tank and poor paint circulation are solved.
A dip coating system comprising a dip coating tank and a circulation mechanism, wherein the circulation mechanism is connected with the dip coating tank and is used for enabling coating in the dip coating tank to be in a flowing state; the dip-coating tank is used for containing the application liquid, and the product to be dip-coated is placed into the application liquid in the dip-coating tank for application.
Further, the dip-coating pool is provided with a dip-coating cavity and an overflow cavity, a first cone hopper is arranged at the lower part of the dip-coating cavity and used for gathering and applying liquid, and a liquid outlet is arranged at one end of the first cone hopper far away from the dip-coating cavity; the overflow cavity is arranged on the side wall of the dip-coating cavity, namely the overflow cavity and the dip-coating cavity share one side wall, and the shared side wall is lower than the non-shared side wall so as to prevent the coating liquid from overflowing out of the dip-coating cavity and the overflow cavity; the overflow cavity is provided with at least one, and the bottom of the overflow cavity is provided with a second cone hopper which is also used for collecting the application liquid.
Still further, a liquid level detector is further arranged in the dip-coating tank, and the liquid level detector is used for detecting the volume of the applied liquid in the dip-coating tank so as to ensure that the currently-applied Tu Sha core can be completely dip-coated; specifically, the liquid level detector is disposed at the top of the overflow chamber.
Further, a Baume degree detector is also arranged in the dip-coating pool and is used for detecting the concentration of the coating liquid in the dip-coating cavity so as to ensure the surface quality of the sand core coating and achieve the set high-resistance Wen Chengdu; the Baume degree detector is arranged on the side wall of the dip-coating pool without the overflow cavity.
Still further, still be equipped with first liquid material entry in the dip-coating pond, overflow chamber with be equipped with on the shared lateral wall in dip-coating pond first liquid material entry, just shared lateral wall top still is equipped with the overflow board, the overflow board can be accelerated in the dip-coating pond the application liquid material accelerates to flow to overflow chamber.
Further, the side wall not shared by the overflow chamber and the dip-coating tank is higher than the shared side wall, and the height of the not shared side wall is equal.
Further, a second liquid inlet is formed in the side wall of the first cone, and at least two second liquid inlets are formed in the second liquid inlet and used for increasing the injection rate of the application liquid.
Further, the circulating mechanism comprises a first circulating loop and a second circulating loop, wherein the first circulating loop is the self-circulation of the coating liquid in the dip-coating cavity and is used for filtering sand grains in the coating liquid in the dip-coating cavity; the second circulation loop is used for circulating the coating liquid in the overflow cavity to the dip-coating cavity, so that the recycling of the coating liquid in the overflow cavity and the dip-coating cavity is realized.
Still further, in order to achieve the filtering effect of the first circulation loop on the application liquid, the dip coating system further comprises a precipitation mechanism, wherein the precipitation mechanism is connected in series in the first circulation loop; specifically, the sedimentation mechanism is connected with the discharge port of the first cone hopper and is used for receiving the application liquid from the dip-coating cavity.
Still further, still be equipped with first diaphragm pump in the first circulation loop, first diaphragm pump with precipitation mechanism links to each other, is used for will pass through the application liquid of precipitation mechanism the first liquid material entry return to in the dip-coating chamber, realize the self-loopa of application liquid material in the dip-coating chamber. By returning the high-concentration application liquid at the bottom of the dip-coating cavity to the upper part of the dip-coating pool, the concentration of the upper part and the lower part of the application liquid in the dip-coating cavity is basically kept all the time, the application consistency of the product to be dip-coated is ensured, and the application quality is improved.
Still further, the second circulation loop is connected between the overflow chamber and the dip-coating chamber by a second diaphragm pump to return the application liquid in the overflow chamber to the dip-coating chamber; specifically, the input end of the second diaphragm pump is connected with the discharge port of the second cone, and the output end of the second diaphragm pump is connected with the second liquid inlet. The high-concentration coating liquid at the bottom of the dip-coating cavity is impacted upwards by the mode of flushing the coating liquid into the dip-coating cavity from the bottom of the dip-coating cavity, so that the stirring effect on the coating liquid in the dip-coating cavity is realized.
Further, the dip coating system also comprises a mixing station, wherein the mixing station is used for mixing the coating liquid and conveying the coating liquid which is qualified to be mixed to the dip coating tank.
Still further, the compounding station is connected with the first liquid material inlet through the first diaphragm pump, realizes adding newly configured qualified application liquid material into the dip-coating cavity, and supplements application liquid material consumed by application.
The technical scheme of the invention has the beneficial effects that: the circulation and filtering of the application liquid in the dip-coating cavity are realized, the effective working time of the dip-coating cavity is prolonged, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a dip tank configuration;
FIG. 2 is a schematic diagram of dip coating system operation;
wherein, 1-dip coating cavity; 2-an overflow chamber; 3-a first liquid inlet; 4-a second liquid inlet; 5-a first cone; 6-a second cone.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, it is obvious that the following description is a few exemplary embodiments of the present invention, and other solutions can be obtained according to these embodiments without inventive effort for a person skilled in the art.
The invention provides a dip-coating system for solving the problem that sand grains at the bottom of a dip-coating tank are silted and the baume degree of an application liquid material in the dip-coating tank is uneven.
A dip coating system comprising a dip coating tank and a circulation mechanism, wherein the circulation mechanism is connected with the dip coating tank and is used for enabling coating in the dip coating tank to be in a flowing state; the dip-coating tank is used for containing the application liquid, the product to be dip-coated is placed into the application liquid in the dip-coating tank for application, namely the application of the product to be dip-coated is completed, for example, a sand core or a sand mold is placed into the dip-coating tank, and the surface and the cavity of the sand core or the sand mold are applied. The specific embodiments are as follows.
In this embodiment, the dip-coating tank is provided with a dip-coating cavity 1 and two overflow cavities 2, the two overflow cavities 2 and the dip-coating cavity 1 share two side walls in the length direction, and a plurality of first liquid inlets 3 are respectively arranged on the two shared side walls; the lower part of the dip-coating cavity 1 is provided with two first cone hoppers 5 which are used for collecting the application liquid material and conveniently collecting sand grains mixed into the application liquid material; the lower part of the overflow cavity 2 is also provided with a second cone hopper 6 which is also used for collecting the application liquid material, so that the liquid material can be conveniently output or discharged.
As a complement to this embodiment, the height of the shared side walls is lower than the height of the non-shared side walls, thereby facilitating the flow of the application liquid from the dip-coating chamber 1 into the overflow chamber 2; more preferably, in order to enable the coating liquid to flow into the overflow chamber 2 before the product to be coated is put into the dip-coating chamber 1, but not overflow to the outside of the dip-coating tank, the top of the shared side wall is further provided with an overflow plate, which can accelerate the flow speed of the coating liquid, thereby ensuring that the coating liquid overflows into the overflow chamber 2 instead of overflowing to the outside of the dip-coating tank.
As another supplement of this embodiment, a baume degree detector is disposed on any one or both side walls of the dip-coating cavity 1 in the width direction, and the baume degree detector is used for detecting the concentration of the application liquid in the dip-coating cavity 1, so as to ensure that the surface quality of the sand core applied reaches a set high temperature resistant degree.
As another supplement of the embodiment, in order to ensure that each product to be dip-coated can be completely immersed in the application liquid in the dip-coating cavity 1, a liquid level detector is further arranged in the dip-coating tank and is used for detecting the liquid level of the application liquid in the dip-coating cavity 1; in particular, the level detector is arranged at the top of the overflow chamber 2.
As another supplement of this embodiment, the first liquid inlet 3 is disposed at an upper portion of the shared sidewall, so that even if the returned application liquid is injected into the application liquid from an upper portion in the dip-coating chamber 1, the baume degree of the application liquid with a lower baume degree at the upper portion is improved, the consistency of the baume degrees at the upper and lower portions of the application liquid in the dip-coating chamber 1 is ensured, and the application quality of the product to be dip-coated is ensured.
As another supplement of this embodiment, in order to promote the stirring effect of the application liquid entering the dip-coating cavity 1 from the first liquid inlet 3 on the application liquid in the dip-coating cavity 1, the first liquid inlet 3 extends into the dip-coating cavity 1 for a certain distance, and the first liquid inlet 3 forms an angle of 10 degrees to 45 degrees with the horizontal direction, especially selects an inclination angle of 45 degrees, and the application liquid with high baume degree from the bottom of the dip-coating cavity 1 is sprayed on, so that on one hand, the application liquid in the dip-coating cavity 1 can be uniformly mixed, and on the other hand, the flow speed of the application liquid at the upper part in the dip-coating cavity 1 can be accelerated, and the application quality is improved.
As another supplement of this embodiment, the height of the side wall that is not shared by the overflow cavity 2 and the dip-coating cavity 1 is equal, the height of the side wall that is shared by the overflow cavity 2 and the dip-coating cavity 1 is equal, and the height of the side wall that is shared is lower than that of the side wall that is not shared, so that the dip-coating pool at the overflow position of the application liquid is ensured, and the pollution of the application liquid to the external environment and the waste of the application liquid are avoided.
As a supplement to this embodiment, the side wall of the first cone 5 is provided with a plurality of second liquid inlets 4, and the application liquid returned through the second liquid inlets 4 enters the dip-coating cavity 1, so as to perform a scouring action on the sand grains deposited on the side wall of the first cone 5, and at the same time, perform a stirring action on the application liquid in the dip-coating cavity 1, so that the application liquid is more uniform. In this embodiment, two second liquid inlets 4 are provided on the side wall of each first cone 5, which not only increases the injection rate of the application liquid, but also makes the stirring effect on the application liquid in the dip-coating chamber 1 stronger.
In another embodiment, in order to realize the liquid material circulation function of the technical scheme of the invention, the circulation mechanism comprises a first circulation loop and a second circulation loop; the first circulation loop is used for realizing self circulation of the application liquid in the dip-coating cavity 1, so that the application liquid in the dip-coating cavity 1 keeps the upper part and the lower part of the application liquid in a normalized circulation, and the baume degree of each part of the application liquid in the dip-coating cavity 1 is ensured to be the same or kept in a set range; the second circulation loop is used for returning the application liquid in the overflow cavity 2 to the dip-coating cavity 1, so that the application liquid in the overflow cavity 2 and the dip-coating cavity 1 can be recycled, the consumption of the application liquid is saved, the application liquid in the dip-coating cavity 1 is in a flowing state, and the consistency of baume degrees of all parts of the application liquid is ensured.
As a supplement to this embodiment, the dip coating system further includes a precipitation mechanism, and the precipitation mechanism is connected in series in the first circulation loop, so that the applied liquid material returned to the dip coating cavity 1 through the first circulation loop filters out sand grains, so that the sand grain content of the applied liquid material in the dip coating cavity 1 is ensured not to exceed a set range, and the surface application quality of the product to be applied is ensured. Specifically, the inlet of sedimentation mechanism with the discharge gate of first awl fill 5 links to each other for accept the applied liquid material from dip-coating chamber 1, be equipped with sand grain filter equipment in the sedimentation mechanism, can effectually filter the sand grain that comes from the applied liquid material in the dip-coating chamber 1, guaranteed that the sand content of applied liquid material that exports from sedimentation mechanism has satisfied the quality requirement of applying, the export of sedimentation mechanism links to each other with first liquid material inlet 3, returns the applied liquid material after filtering to dip-coating chamber 1, realizes the self-loopa of applied liquid material in the dip-coating chamber 1.
As another supplement of this embodiment, in order to smoothly withdraw the application liquid from the precipitation mechanism and return the application liquid to the dip-coating chamber 1, a first diaphragm pump is further disposed in the first circulation loop, and the first diaphragm pump is disposed between the outlet of the precipitation mechanism and the first liquid inlet 3, so as to increase the loop speed of returning the application liquid, and increase the circulation speed of the application liquid in the dip-coating chamber 1.
As another supplement of this embodiment, the sedimentation mechanism is further provided with a cleaning opening for periodically cleaning sand grains and other impurities filtered from the application liquid in the sedimentation mechanism.
As a complement to this embodiment, the second circulation loop is connected between the overflow chamber 2 and the dip chamber 1 by a second diaphragm pump for delivering the application liquid in the overflow chamber 2 into the dip chamber 1. In this embodiment, the second diaphragm pump is provided with two inlets and two outlets, the two inlets of the second diaphragm pump are connected with the two discharge outlets of the second cone hopper 6, the two outlets of the second diaphragm pump are connected with the second liquid inlet 4, and in this connection mode, under the pressurization effect of the second diaphragm pump, the application liquid from the overflow cavity 2 enters the dip-coating cavity 1 from the second liquid inlet 4 under a certain pressure, so that the impact on sand grains at the bottom of the dip-coating cavity 1 is realized, the sand grains bonded on the first cone hopper 5 are impacted into the application liquid, and the application liquid flows out along with the application liquid, so that the sand grains are prevented from being silted up, and meanwhile, the application liquid with a larger impact force has a better stirring effect on the application liquid in the dip-coating cavity 1.
In another embodiment, the dip coating system further comprises a mixing station for dispensing the liquid for application, i.e. dispensing the application liquid. In this embodiment, in order to save the use cost of the dip coating system, the liquid outlet of the mixing station is connected to the inlet of the first diaphragm pump, that is, the first diaphragm pump conveys the application liquid in the configured mixing station into the dip coating cavity 1 through the first liquid inlet 3, so as to supplement the consumption of the application liquid.
According to the invention, by adopting two circulation loops, the circulation rate of the application liquid in the dip-coating tank is greatly improved, so that the circulation demand of the large-volume sand core dip-coating on the application liquid can be met; meanwhile, the application liquid entering from the first liquid inlet 3 can also have the effect of flow coating on the sand core to be applied; meanwhile, the application liquid with certain pressure entering from the second liquid inlet 4 has certain flow speed, so that the application liquid can better enter the cavity of the sand core, the flow speed and the possibility of the application liquid entering the cavity of the sand core are ensured or improved, the effect of sand core application is ensured, and the possibility or risk of application leakage in the cavity of the sand core is avoided and reduced.
The above embodiment is only a description of a typical application of the technical scheme of the present invention, and can be reasonably expanded on the basis of reasonable design and no need of creative labor.

Claims (10)

1. A dip coating system, comprising a dip coating tank and a circulation mechanism, wherein the circulation mechanism is connected with the dip coating tank and is used for enabling the coating in the dip coating tank to be in a flowing state; the dip-coating tank is used for containing the application liquid, and the product to be dip-coated is placed into the application liquid in the dip-coating tank for application.
2. The dip-coating system according to claim 1, wherein the dip-coating tank is provided with a dip-coating cavity and an overflow cavity, a first cone hopper is arranged at the lower part of the dip-coating cavity and used for collecting application liquid, and a liquid outlet is arranged at one end of the first cone hopper far away from the dip-coating cavity; the overflow cavity is arranged on the side wall of the dip-coating cavity, and a second cone hopper is arranged at the bottom of the overflow cavity and is also used for collecting the application liquid.
3. The dip coating system of claim 2, wherein a liquid level detector is further provided in the dip coating bath, the liquid level detector being configured to detect a liquid level of the application liquid in the dip coating bath.
4. The dip coating system of claim 2, wherein a baume detector is further disposed in the dip coating bath, the baume detector being configured to detect a concentration of the application liquid in the dip coating chamber.
5. A dip coating system as claimed in claim 2, wherein a first liquid inlet is provided on a common side wall of the overflow chamber and the dip coating bath; a second liquid inlet is formed in the side wall of the first cone hopper; the first liquid inlet and the second liquid inlet are both used for returning the application liquid.
6. The dip coating system of claim 2, wherein the circulation mechanism comprises a first circulation loop and a second circulation loop, the first circulation loop being a self-circulation loop for the application liquid in the dip coating chamber, the second circulation loop being configured to circulate the application liquid in the overflow chamber into the dip coating chamber for recycling of the application liquid in the overflow chamber and the dip coating chamber.
7. The dip coating system of claim 6, further comprising a precipitation mechanism in series in the first circulation loop.
8. The dip coating system of claim 7, wherein a first diaphragm pump is further disposed in the first circulation loop, the first diaphragm pump being disposed between the outlet of the precipitation mechanism and the first liquid inlet.
9. The dip coating system of claim 6, wherein the second circulation loop is connected between the overflow chamber and the dip coating chamber by a second diaphragm pump for delivering the coating liquid in the overflow chamber into the dip coating chamber.
10. The dip coating system of claim 7, further comprising a compounding station to configure the applied liquid; and a liquid outlet of the mixing station is connected to an inlet of the first diaphragm pump, and the first diaphragm pump conveys the coating liquid in the prepared mixing station into the dip-coating cavity through the first liquid inlet so as to supplement the consumption of the coating liquid.
CN202310324483.XA 2023-03-30 2023-03-30 Dip coating system Pending CN116329495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310324483.XA CN116329495A (en) 2023-03-30 2023-03-30 Dip coating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310324483.XA CN116329495A (en) 2023-03-30 2023-03-30 Dip coating system

Publications (1)

Publication Number Publication Date
CN116329495A true CN116329495A (en) 2023-06-27

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Application Number Title Priority Date Filing Date
CN202310324483.XA Pending CN116329495A (en) 2023-03-30 2023-03-30 Dip coating system

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CN (1) CN116329495A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117226053A (en) * 2023-11-10 2023-12-15 河南省金太阳精密铸业股份有限公司 Iron casting sand core dip-coating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117226053A (en) * 2023-11-10 2023-12-15 河南省金太阳精密铸业股份有限公司 Iron casting sand core dip-coating device
CN117226053B (en) * 2023-11-10 2024-01-30 河南省金太阳精密铸业股份有限公司 Iron casting sand core dip-coating device

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